1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) International Business Machines Corp., 2001 4f08c3bdfSopenharmony_ci */ 5f08c3bdfSopenharmony_ci 6f08c3bdfSopenharmony_ci/*\ 7f08c3bdfSopenharmony_ci * [Description] 8f08c3bdfSopenharmony_ci * 9f08c3bdfSopenharmony_ci * Testcase to check the whether chroot sets errno to EPERM. 10f08c3bdfSopenharmony_ci * 11f08c3bdfSopenharmony_ci * As a non-root user attempt to perform chroot() to a directory. The 12f08c3bdfSopenharmony_ci * chroot() call should fail with EPERM 13f08c3bdfSopenharmony_ci */ 14f08c3bdfSopenharmony_ci 15f08c3bdfSopenharmony_ci#include <stdlib.h> 16f08c3bdfSopenharmony_ci#include <pwd.h> 17f08c3bdfSopenharmony_ci#include "tst_test.h" 18f08c3bdfSopenharmony_ci 19f08c3bdfSopenharmony_cistatic char *path; 20f08c3bdfSopenharmony_ci 21f08c3bdfSopenharmony_cistatic void verify_chroot(void) 22f08c3bdfSopenharmony_ci{ 23f08c3bdfSopenharmony_ci TST_EXP_FAIL(chroot(path), EPERM, "unprivileged chroot()"); 24f08c3bdfSopenharmony_ci} 25f08c3bdfSopenharmony_ci 26f08c3bdfSopenharmony_cistatic void setup(void) 27f08c3bdfSopenharmony_ci{ 28f08c3bdfSopenharmony_ci struct passwd *ltpuser; 29f08c3bdfSopenharmony_ci 30f08c3bdfSopenharmony_ci path = tst_get_tmpdir(); 31f08c3bdfSopenharmony_ci ltpuser = SAFE_GETPWNAM("nobody"); 32f08c3bdfSopenharmony_ci SAFE_SETEUID(ltpuser->pw_uid); 33f08c3bdfSopenharmony_ci} 34f08c3bdfSopenharmony_ci 35f08c3bdfSopenharmony_cistatic void cleanup(void) 36f08c3bdfSopenharmony_ci{ 37f08c3bdfSopenharmony_ci free(path); 38f08c3bdfSopenharmony_ci} 39f08c3bdfSopenharmony_ci 40f08c3bdfSopenharmony_cistatic struct tst_test test = { 41f08c3bdfSopenharmony_ci .cleanup = cleanup, 42f08c3bdfSopenharmony_ci .setup = setup, 43f08c3bdfSopenharmony_ci .test_all = verify_chroot, 44f08c3bdfSopenharmony_ci .needs_root = 1, 45f08c3bdfSopenharmony_ci .needs_tmpdir = 1, 46f08c3bdfSopenharmony_ci}; 47